Fix potential memory leak in File Storage
Fix potential memory leak in File Storage

Reviewed-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Reviewed-by: James Kung <ccb896ecfb1ce095f136a0b56b1855fbcbd0762c@linaro.org>
Signed-off-by: Pascal Brand <0b55292d2562685bad4ce52d64f802e8f1cd299e@st.com>

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